javascript - 如何让按钮点击后凹陷？

Question

我有一组多组按钮，单击这些按钮以显示它们已被选中。我已经成功实现了这一点。但问题是按钮在鼠标松开后再次升起。

我需要按钮在鼠标离开后保持按下状态。

截图:

代码:

.button {
  position: absolute;
  top: 100px;
  left: 200px;
  display: inline-block;
  margin: 0 auto;
  -webkit-border-radius: 10px;
  -webkit-box-shadow: 0px 3px rgba(128, 128, 128, 1),
  /* gradient effects */
  0px 4px rgba(118, 118, 118, 1), 0px 5px rgba(108, 108, 108, 1), 0px 6px rgba(98, 98, 98, 1), 0px 7px rgba(88, 88, 88, 1), 0px 8px rgba(78, 78, 78, 1), 0px 14px 6px -1px rgba(128, 128, 128, 1);
  /* shadow */
  -webkit-transition: -webkit-box-shadow .1s ease-in-out;
}
.button span {
  background-color: #E8E8E8;
  background-image:
  /* gloss gradient */
  -webkit-gradient(linear, left bottom, left top, color-stop(50%, rgba(255, 255, 255, 0)), color-stop(50%, rgba(255, 255, 255, 0.3)), color-stop(100%, rgba(255, 255, 255, 0.2))),
  /* dark outside gradient */
  -webkit-gradient(linear, left top, right top, color-stop(0%, rgba(210, 210, 210, 0.3)), color-stop(20%, rgba(210, 210, 210, 0)), color-stop(80%, rgba(210, 210, 210, 0)), color-stop(100%, rgba(210, 210, 210, 0.3))),
  /* light inner gradient */
  -webkit-gradient(linear, left top, right top, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(20%, rgba(255, 255, 255, 0.5)), color-stop(80%, rgba(255, 255, 255, 0.5)), color-stop(100%, rgba(255, 255, 255, 0))),
  /* diagonal line pattern */
  -webkit-gradient(linear, 0% 100%, 100% 0%, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(40%, rgba(255, 255, 255, 0)), color-stop(40%, #D2D2D1), color-stop(60%, #D2D2D1), color-stop(60%, rgba(255, 255, 255, 0)), color-stop(100%, rgba(255, 255, 255, 0)));
  -webkit-box-shadow: 0px -1px #fff,
  /* top highlight */
  0px 1px 1px #FFFFFF;
  /* bottom edge */
  -webkit-background-size: 100%, 100%, 100%, 4px 4px;
  -webkit-border-radius: 10px;
  -webkit-transition: -webkit-transform .1s ease-in-out;
  display: inline-block;
  padding: 10px 40px 10px 40px;
  color: #3A474D;
  text-transform: uppercase;
  font-family: 'TradeGothicLTStd-BdCn20', 'PT Sans Narrow';
  font-weight: 700;
  font-size: 32px;
  text-shadow: 0px 1px #fff, 0px -1px #262F33;
}
.button span:hover {
  color: #AEBF3B;
  text-shadow: 0px -1px #97A63A;
  cursor: pointer;
}
.button:active {
  -webkit-box-shadow: 0px 3px rgba(128, 128, 128, 1), 0px 4px rgba(118, 118, 118, 1), 0px 5px rgba(108, 108, 108, 1), 0px 6px rgba(98, 98, 98, 1), 0px 7px rgba(88, 88, 88, 1), 0px 8px rgba(78, 78, 78, 1), 0px 10px 2px 0px rgba(128, 128, 128, .6);
  /* shadow */
}
.button:active span {
  -webkit-transform: translate(0, 5px);
  /* depth of button press */
}
.button span:after {
  content: ">";
  display: block;
  width: 10px;
  height: 10px;
  position: absolute;
  right: 14px;
  top: 12px;
  font-family: 'Cabin';
  font-weight: 700;
  color: #AEBF3B;
  text-shadow: 0px 1px #fff, 0px -1px #97A63A;
  font-size: 26px;
}

<link href="http://fonts.googleapis.com/css?family=Cabin:400,500,600,bold" rel="stylesheet" type="text/css">
<link href="http://fonts.googleapis.com/css?family=PT+Sans+Narrow:regular,bold" rel="stylesheet" type="text/css">

<a class="button">
  <span>select me </span>
</a>

Answer 1

您可以在下面找到基于 jQuery 的版本的完整代码，一个基于 vanilla JS，一个仅使用 HTML 和 CSS 来实现所需的效果。

您还可以使用以下 Fiddles 中的代码:

• jQuery version
• JS version without jQuery
• HTML/CSS only version

---

jQuery 版本:

HTML :

<link href="http://fonts.googleapis.com/css?family=Cabin:400,500,600,bold" rel="stylesheet" type="text/css">
<link href="http://fonts.googleapis.com/css?family=PT+Sans+Narrow:regular,bold" rel="stylesheet" type="text/css">

<a class="button">
  <span>select me </span>
</a>

CSS:

   .button {
  position: absolute;
  top: 100px;
  left: 200px;
  display: inline-block;
  margin: 0 auto;
  -webkit-border-radius: 10px;
  -webkit-box-shadow: 0px 3px rgba(128, 128, 128, 1),
  /* gradient effects */
  0px 4px rgba(118, 118, 118, 1), 0px 5px rgba(108, 108, 108, 1), 0px 6px rgba(98, 98, 98, 1), 0px 7px rgba(88, 88, 88, 1), 0px 8px rgba(78, 78, 78, 1), 0px 14px 6px -1px rgba(128, 128, 128, 1);
  /* shadow */
  -webkit-transition: -webkit-box-shadow .1s ease-in-out;
}

.button span {
  background-color: #E8E8E8;
  background-image:
  /* gloss gradient */
  -webkit-gradient(linear, left bottom, left top, color-stop(50%, rgba(255, 255, 255, 0)), color-stop(50%, rgba(255, 255, 255, 0.3)), color-stop(100%, rgba(255, 255, 255, 0.2))),
  /* dark outside gradient */
  -webkit-gradient(linear, left top, right top, color-stop(0%, rgba(210, 210, 210, 0.3)), color-stop(20%, rgba(210, 210, 210, 0)), color-stop(80%, rgba(210, 210, 210, 0)), color-stop(100%, rgba(210, 210, 210, 0.3))),
  /* light inner gradient */
  -webkit-gradient(linear, left top, right top, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(20%, rgba(255, 255, 255, 0.5)), color-stop(80%, rgba(255, 255, 255, 0.5)), color-stop(100%, rgba(255, 255, 255, 0))),
  /* diagonal line pattern */
  -webkit-gradient(linear, 0% 100%, 100% 0%, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(40%, rgba(255, 255, 255, 0)), color-stop(40%, #D2D2D1), color-stop(60%, #D2D2D1), color-stop(60%, rgba(255, 255, 255, 0)), color-stop(100%, rgba(255, 255, 255, 0)));
  -webkit-box-shadow: 0px -1px #fff,
  /* top highlight */
  0px 1px 1px #FFFFFF;
  /* bottom edge */
  -webkit-background-size: 100%, 100%, 100%, 4px 4px;
  -webkit-border-radius: 10px;
  -webkit-transition: -webkit-transform .1s ease-in-out;
  display: inline-block;
  padding: 10px 40px 10px 40px;
  color: #3A474D;
  text-transform: uppercase;
  font-family: 'TradeGothicLTStd-BdCn20', 'PT Sans Narrow';
  font-weight: 700;
  font-size: 32px;
  text-shadow: 0px 1px #fff, 0px -1px #262F33;
}

.button span:hover {
  color: #AEBF3B;
  text-shadow: 0px -1px #97A63A;
  cursor: pointer;
}

.button.pressed {
  -webkit-box-shadow: 0px 3px rgba(128, 128, 128, 1), 0px 4px rgba(118, 118, 118, 1), 0px 5px rgba(108, 108, 108, 1), 0px 6px rgba(98, 98, 98, 1), 0px 7px rgba(88, 88, 88, 1), 0px 8px rgba(78, 78, 78, 1), 0px 10px 2px 0px rgba(128, 128, 128, .6);
  /* shadow */
}

.button.pressed span {
  -webkit-transform: translate(0, 5px);
  /* depth of button press */
}

.button span:after {
  content: ">";
  display: block;
  width: 10px;
  height: 10px;
  position: absolute;
  right: 14px;
  top: 12px;
  font-family: 'Cabin';
  font-weight: 700;
  color: #AEBF3B;
  text-shadow: 0px 1px #fff, 0px -1px #97A63A;
  font-size: 26px;
}

JS :

$('.button').click(function(){
    $(this).toggleClass('pressed');
});

---

没有 jQuery 的 JS 版本:

HTML :

<link href="http://fonts.googleapis.com/css?family=Cabin:400,500,600,bold" rel="stylesheet" type="text/css">
<link href="http://fonts.googleapis.com/css?family=PT+Sans+Narrow:regular,bold" rel="stylesheet" type="text/css">

<a class="button">
  <span>select me </span>
</a>

CSS:

 .button {
  position: absolute;
  top: 100px;
  left: 200px;
  display: inline-block;
  margin: 0 auto;
  -webkit-border-radius: 10px;
  -webkit-box-shadow: 0px 3px rgba(128, 128, 128, 1),
  /* gradient effects */
  0px 4px rgba(118, 118, 118, 1), 0px 5px rgba(108, 108, 108, 1), 0px 6px rgba(98, 98, 98, 1), 0px 7px rgba(88, 88, 88, 1), 0px 8px rgba(78, 78, 78, 1), 0px 14px 6px -1px rgba(128, 128, 128, 1);
  /* shadow */
  -webkit-transition: -webkit-box-shadow .1s ease-in-out;
}

.button span {
  background-color: #E8E8E8;
  background-image:
  /* gloss gradient */
  -webkit-gradient(linear, left bottom, left top, color-stop(50%, rgba(255, 255, 255, 0)), color-stop(50%, rgba(255, 255, 255, 0.3)), color-stop(100%, rgba(255, 255, 255, 0.2))),
  /* dark outside gradient */
  -webkit-gradient(linear, left top, right top, color-stop(0%, rgba(210, 210, 210, 0.3)), color-stop(20%, rgba(210, 210, 210, 0)), color-stop(80%, rgba(210, 210, 210, 0)), color-stop(100%, rgba(210, 210, 210, 0.3))),
  /* light inner gradient */
  -webkit-gradient(linear, left top, right top, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(20%, rgba(255, 255, 255, 0.5)), color-stop(80%, rgba(255, 255, 255, 0.5)), color-stop(100%, rgba(255, 255, 255, 0))),
  /* diagonal line pattern */
  -webkit-gradient(linear, 0% 100%, 100% 0%, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(40%, rgba(255, 255, 255, 0)), color-stop(40%, #D2D2D1), color-stop(60%, #D2D2D1), color-stop(60%, rgba(255, 255, 255, 0)), color-stop(100%, rgba(255, 255, 255, 0)));
  -webkit-box-shadow: 0px -1px #fff,
  /* top highlight */
  0px 1px 1px #FFFFFF;
  /* bottom edge */
  -webkit-background-size: 100%, 100%, 100%, 4px 4px;
  -webkit-border-radius: 10px;
  -webkit-transition: -webkit-transform .1s ease-in-out;
  display: inline-block;
  padding: 10px 40px 10px 40px;
  color: #3A474D;
  text-transform: uppercase;
  font-family: 'TradeGothicLTStd-BdCn20', 'PT Sans Narrow';
  font-weight: 700;
  font-size: 32px;
  text-shadow: 0px 1px #fff, 0px -1px #262F33;
}

.button span:hover {
  color: #AEBF3B;
  text-shadow: 0px -1px #97A63A;
  cursor: pointer;
}

.button.pressed {
  -webkit-box-shadow: 0px 3px rgba(128, 128, 128, 1), 0px 4px rgba(118, 118, 118, 1), 0px 5px rgba(108, 108, 108, 1), 0px 6px rgba(98, 98, 98, 1), 0px 7px rgba(88, 88, 88, 1), 0px 8px rgba(78, 78, 78, 1), 0px 10px 2px 0px rgba(128, 128, 128, .6);
  /* shadow */
}

.button.pressed span {
  -webkit-transform: translate(0, 5px);
  /* depth of button press */
}

.button span:after {
  content: ">";
  display: block;
  width: 10px;
  height: 10px;
  position: absolute;
  right: 14px;
  top: 12px;
  font-family: 'Cabin';
  font-weight: 700;
  color: #AEBF3B;
  text-shadow: 0px 1px #fff, 0px -1px #97A63A;
  font-size: 26px;
}

JS :

var buttons = document.getElementsByClassName("button");
[].forEach.call(buttons, function(button) {
    button.addEventListener("click", function(e) {
        this.classList.toggle('pressed');        
    });
});

---

HTML/CSS 版本:

HTML :

<link href="http://fonts.googleapis.com/css?family=Cabin:400,500,600,bold" rel="stylesheet" type="text/css">
<link href="http://fonts.googleapis.com/css?family=PT+Sans+Narrow:regular,bold" rel="stylesheet" type="text/css">

<button class="button">
<input type="checkbox" id="selectme" />
<span>
  <label for="selectme">select me </label>
</span>
</button>

CSS:

.button {
  margin-left: -5000px;
}

.button span {
  position: absolute;
  top: 100px;
  left: 200px;
  display: inline-block;
  margin: 0 auto;
  -webkit-border-radius: 10px;
  -webkit-box-shadow: 0px 3px rgba(128, 128, 128, 1),
  /* gradient effects */
  0px 4px rgba(118, 118, 118, 1), 0px 5px rgba(108, 108, 108, 1), 0px 6px rgba(98, 98, 98, 1), 0px 7px rgba(88, 88, 88, 1), 0px 8px rgba(78, 78, 78, 1), 0px 14px 6px -1px rgba(128, 128, 128, 1);
  /* shadow */
  -webkit-transition: -webkit-box-shadow .1s ease-in-out;
}
.button label {
  background-color: #E8E8E8;
  background-image:
  /* gloss gradient */
  -webkit-gradient(linear, left bottom, left top, color-stop(50%, rgba(255, 255, 255, 0)), color-stop(50%, rgba(255, 255, 255, 0.3)), color-stop(100%, rgba(255, 255, 255, 0.2))),
  /* dark outside gradient */
  -webkit-gradient(linear, left top, right top, color-stop(0%, rgba(210, 210, 210, 0.3)), color-stop(20%, rgba(210, 210, 210, 0)), color-stop(80%, rgba(210, 210, 210, 0)), color-stop(100%, rgba(210, 210, 210, 0.3))),
  /* light inner gradient */
  -webkit-gradient(linear, left top, right top, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(20%, rgba(255, 255, 255, 0.5)), color-stop(80%, rgba(255, 255, 255, 0.5)), color-stop(100%, rgba(255, 255, 255, 0))),
  /* diagonal line pattern */
  -webkit-gradient(linear, 0% 100%, 100% 0%, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(40%, rgba(255, 255, 255, 0)), color-stop(40%, #D2D2D1), color-stop(60%, #D2D2D1), color-stop(60%, rgba(255, 255, 255, 0)), color-stop(100%, rgba(255, 255, 255, 0)));
  -webkit-box-shadow: 0px -1px #fff,
  /* top highlight */
  0px 1px 1px #FFFFFF;
  /* bottom edge */
  -webkit-background-size: 100%, 100%, 100%, 4px 4px;
  -webkit-border-radius: 10px;
  -webkit-transition: -webkit-transform .1s ease-in-out;
  display: inline-block;
  padding: 10px 40px 10px 40px;
  color: #3A474D;
  text-transform: uppercase;
  font-family: 'TradeGothicLTStd-BdCn20', 'PT Sans Narrow';
  font-weight: 700;
  font-size: 32px;
  text-shadow: 0px 1px #fff, 0px -1px #262F33;
}
.button label:hover {
  color: #AEBF3B;
  text-shadow: 0px -1px #97A63A;
  cursor: pointer;
}

.button input:checked + span {
  -webkit-box-shadow: 0px 3px rgba(128, 128, 128, 1), 0px 4px rgba(118, 118, 118, 1), 0px 5px rgba(108, 108, 108, 1), 0px 6px rgba(98, 98, 98, 1), 0px 7px rgba(88, 88, 88, 1), 0px 8px rgba(78, 78, 78, 1), 0px 10px 2px 0px rgba(128, 128, 128, .6);
  /* shadow */
}

.button input:checked + span label {
  -webkit-transform: translate(0, 5px);
  /* depth of button press */
}

.button label:after {
  content: ">";
  display: block;
  width: 10px;
  height: 10px;
  position: absolute;
  right: 14px;
  top: 12px;
  font-family: 'Cabin';
  font-weight: 700;
  color: #AEBF3B;
  text-shadow: 0px 1px #fff, 0px -1px #97A63A;
  font-size: 26px;
}

JS :

/* CSS only means that no JS code is required at all! */